What does a sending-off cost?

How often a side that has a player sent off goes on to lose. Across the majors it is 53.3% — against a baseline defeat rate near a third.

A red card is most expensive in MLS Next Pro (Amerika Birleşik Devletleri): the side reduced to ten loses 72,7% of the time.

What does a sending-off cost?
League	Went on to lose	Matches with a red
1. MLS Next Pro Amerika Birleşik Devletleri	72.7%	66
2. 1. Division Belarus	70.6%	51
3. Oberliga - Niederrhein Almanya	65%	60
4. Championship İngiltere	64.9%	57
5. Oberliga - Bayern Süd Almanya	63.9%	72
6. Segunda División RFEF - Group 2 İspanya	63.8%	58
7. Eerste Divisie Hollanda	63%	54
8. EFL League One İngiltere	62.9%	89
9. I Liga (Polonya) Polonya	62.7%	75
10. 2. Bundesliga Almanya	62.3%	69
11. Major League Soccer Amerika Birleşik Devletleri	61.5%	78
12. Liga Leumit İsrail	61.5%	52
13. Oberliga - Rheinland-Pfalz / Saar Almanya	61.2%	67
14. National League North İngiltere	61.2%	103
15. 1. Division Kıbrıs	60.9%	64
16. FAW Championship Galler	60.9%	92
17. Proximus League Belçika	60.3%	63
18. Regionalliga - Nord Almanya	60%	65
19. İsviçre Süper Ligi İsviçre	60%	55
20. Football League Two İngiltere	59.5%	84
21. Premier Lig Kuzey İrlanda	59.4%	64
22. Ligat ha'Al İsrail	59%	61
23. Non League Premier - Southern South İngiltere	58.9%	56
24. U19 Bundesliga Almanya	58.8%	114
25. Liga de Expansión MX Meksika	58.2%	79
26. Primera División de México Meksika	58.2%	98
27. LigaPro Portekiz	58.1%	62
28. Devrî'l-Muhterifin es-Suudî Suudi Arabistan	57.7%	71
29. Oberliga - Nordost-Nord Almanya	57.7%	52
30. Bundesliga Almanya	57.7%	52
31. Torneo Federal A Arjantin	57.6%	191
32. Serie C - Girone B İtalya	57.3%	82
33. Non League Premier - Isthmian İngiltere	57.1%	70
34. Segunda División RFEF - Group 3 İspanya	56.9%	58
35. Liga Pro Ekvador	56.8%	95
36. 1 Lyga Litvanya	56.5%	62
37. Oberliga - Westfalen Almanya	56.4%	55
38. 3. Liga Almanya	56.3%	71
39. Primera C Arjantin	56.3%	112
40. Persha Liga Ukrayna	55.8%	52

Showing every competition. Major competitions only

League play only. A match counts once per side that saw a red, so a match with two sendings-off appears on both sides of the ledger.